py_panda: Fix compilation issue with Python 3.11

(Cherry-picked from 833ad89ebad58395d0af0b7ec08538e5e4308265)

dtool/src/interrogatedb/py_panda.cxx

@@ -754,7 +754,7 @@ PyObject *copy_from_make_copy(PyObject *self, PyObject *noargs) {
   if (callable == nullptr) {
     return nullptr;
   }
-  PyObject *result = _PyObject_CallNoArg(callable);
+  PyObject *result = PyObject_CallNoArgs(callable);
   Py_DECREF(callable);
   return result;
 }
@@ -778,7 +778,7 @@ PyObject *map_deepcopy_to_copy(PyObject *self, PyObject *args) {
   if (callable == nullptr) {
     return nullptr;
   }
-  PyObject *result = _PyObject_CallNoArg(callable);
+  PyObject *result = PyObject_CallNoArgs(callable);
   Py_DECREF(callable);
   return result;
 }